LM3S2919 Datasheet, PDF (621/659 Pages) Texas Instruments – Stellaris® LM3S2919 Microcontroller

OBSOLETE: TI has discontinued production of this device.
Stellaris^® LM3S2919 Microcontroller
Table 20-16. Hibernation Module AC Characteristics
Parameter
No
Parameter
Parameter Name
Min Nom Max
Unit
H1
t_{HIB_LOW}
Internal 32.768 KHz clock reference rising
-
200
-
μs
edge to /HIB asserted
H2
t_{HIB_HIGH}
Internal 32.768 KHz clock reference rising
-
30
-
μs
edge to /HIB deasserted
H3
t_{WAKE_ASSERT} /WAKE assertion time
62
-
-
μs
H4
t_WAKETOHIB
/WAKE assert to /HIB desassert
H5
t_{XOSC_SETTLE}
XOSC settling time^a
62
-
124
μs
20
-
-
ms
H6
t_{HIB_REG_ACCESS} Access time to or from a non-volatile register 92
-
-
μs
in HIB module to complete
H7
t_{HIB_TO_VDD}
HIB deassert to VDD and VDD25 at minimum
-
-
250
μs
operational level
a. This parameter is highly sensitive to PCB layout and trace lengths, which may make this parameter time longer. Care
must be taken in PCB design to minimize trace lengths and RLC (resistance, inductance, capacitance).
Figure 20-10. Hibernation Module Timing
32.768 KHz
(internal)
H1
H2
HIB
H4
WAKE
H3
20.2.7
General-Purpose I/O (GPIO)
Note: All GPIOs are 5 V-tolerant.
Table 20-17. GPIO Characteristics
Parameter Parameter Name Condition
Min
Nom
Max
Unit
2-mA drive
17
26
ns
t_GPIOR
GPIO Rise Time
(from 20% to 80%
of V_DD)
4-mA drive
8-mA drive
9
13
ns
-
6
9
ns
8-mA drive with slew rate control
10
12
ns
2-mA drive
17
25
ns
t_GPIOF
GPIO Fall Time
(from 80% to 20%
of V_DD)
4-mA drive
8-mA drive
8
12
ns
-
6
10
ns
8-mA drive with slew rate control
11
13
ns
July 24, 2012
621
Texas Instruments-Production Data